Unsuccessful Outgoing Calls - Auerswald COMpact 4000 Operation Manual

Telephoning

Unsuccessful Outgoing Calls

Initiating an External Call with Calling Line Identity Restriction
Unsuccessful Outgoing Calls
The following options are available for unsuccessful calls:
Initiating Callback on Busy
If you cannot get through to a busy subscriber despite repeated attempts, you can initiate a
callback on busy. The PBX supports the service attribute Automatic callback on busy
(CCBS). This service attribute is required for an external call.
If you have initiated a callback, as soon as the other subscriber has hung up the receiver to end
the call, the PBX (for an internal call) or central office (for an external call) calls you. If you then
pick up the receiver, the other subscriber will be called. If the other subscriber picks up the
receiver, the connection for the call will be established. This deletes the callback procedure in
the PBX/central office.
Initiating Reservation of Exchange Line on Busy
If you hear a busy signal before you have continued dialling the phone number, all exchange
lines (first and second B channel of the available external S ports) are currently busy. You can
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initiate the reservation of an exchange line if you want your PBX to call you back as soon as a
free line is available.
Initiating Callback on No Response
If the subscriber being called does not pick up the receiver, you can configure callback on no
response in order to reach this subscriber without having to call him repeatedly. The function
can be used for both internal and external calls. The service attribute Callback on no
response (CCNR) is supported by the PBX. This service attribute is required for external calls.
If you have initiated a callback, as soon as the other subscriber has hung up the receiver to end
the call, the PBX or central office calls you. If you then pick up the receiver, the other subscriber
will be called. If the other subscriber picks up the receiver, the connection for the call will be
established. This deletes the callback procedure in the PBX/central office.
Initiating Priority Call for Do-not-Disturb
If, for example, a person must absolutely be reached in an emergency despite the do-not-
disturb function, the do-not-disturb function can be circumvented by a priority call from an
internal telephone.
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COMpact 4000 - Firmware V6.6A - Installation, Operation and Configuration V03 03/2016